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Basic Installation/Operation
29
70421501 (EN)
Ignition Control Operation
Diagnostic LED (DGN LED)
/ Error Codes
The Diagnostic LED or DGN LED is located by the
power connector on the ignition control. Refer to
. The Diagnostic LED will indicate the status
of the ignition control. Refer to
.
The Diagnostic LED will flash error codes one half
second on and one half second off. Error codes are
separated by a one second pause before the code is
repeated.
LED Color
Description
Orange-Yellow
Initialization
Green
Standby / Normal Operation
Red
Fault Indication Code
Table 5
Error
Code
DGN LED status
Fault Type
1
Red
Ignition Control Internal Failure
2
2 Red Flashes
Gas Valve Not Connected
3
3 Red Flashes
Ignition/Flame Sense Failure
4
4 Red Flashes
Reset Switch is Shorted
5
Slow Red and Green Flashes
Low Voltage Detection
6
Fast Red and Orange Flashes
Ignition Control is in Reset Delay
TMB2176N
1
Diagnostic (DGN) LED
Figure 22
1
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